Examine source code of TabLimiter

{
  "manifest_version": 2,
  "name": "TabLimiter",
  "author": "James Kwon",
  "version": "1.0",
  "description": "Limits tabs to a customizable amount.",
  "browser_action": {
    "default_title": "TabLimiter",
    "default_icon": "icons/tab-24px.svg",
    "default_popup": "popup/config.html"
  },
  "icons": {
    "48": "icons/tab-24px.svg",
    "96": "icons/tab-24px.svg"
  },
  "background": {
    "scripts": [
      "limiter.js",
      "update.js"
    ]
  },
  "permissions": [
    "storage"
  ]
}